TEHRAN, Iran 
Iran said Tuesday it will not respond to international questions about the whereabouts of top opposition leaders who purportedly have been jailed and considers the matter a "completely domestic" affair.

The comments by Foreign Ministry spokesman Ramin Mehmanparast coincided with calls on social media sites for opposition rallies in Tehran, where security forces and plainclothes militiamen were deployed in efforts to stamp out any protest gatherings.

Rights groups and family members claim the opposition leaders Mir Hossein Mousavi and Mahdi Karroubi - and both their wives - have been taken from their homes and jailed in an unknown location. Iranian authorities have denied the reports, but there has been no independent confirmation of their location.

Mehmanparast denounced outside pressures to clarify the status of the two opposition figures.

"The internal issues of our country are completely domestic and no country is and will be allowed to interfere in the internal affairs of our country," he told reporters.

Mehmanparast said any "issues relating to" Mousavi and Karroubi "will be dealt in the framework of law by judicial authorities."

The semiofficial news agency ISNA quoted prosecutor Gholam Hossein Mohseni Ejehi as saying that the two men are not in a prison, but the report gave no further details.

Mousavi and Karroubi were placed under house arrest after urging supporters to attend a Feb. 14 rally. Clashes between protesters and security forces during the demonstrations killed two and wounded dozens.